Because it’s him or Trump and Trump is demonstrably worse.
This article itself is deeply disingenuous calling Biden a tiny bit better on queer rights or the environment.
They’re not even in the same ballpark. Trump is a disaster for the environment, for reproductive rights, for minorities, and for the Middle East.
I would give anything for an alternative to Biden that wasn’t Trump, but pretending that voting against Biden would somehow be better for Palestine is insane.